Senior Platform Engineer


Company:	A2Dominion
Salary:	£58,714 to £65,000 a year
Hours:	Full-time
Location:	Ealing / Hybrid, W5 5TL
Job type:	Permanent
Posting date:	17 Sept 2026
Closing date:	1 Oct 2026

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Summary

Senior Platform Engineer

Location:Ealing / Hybrid (some office attendance required)

Salary:£58,714-£65,000 (dependent on experience)

Contract type: Permanent – Full Time (35 hours per week, Monday to Friday)

DBS Level –Basic

Lead and evolve the technology platforms that power our organisation

Are you a senior infrastructure or cloud professional with a passion for building secure, resilient and high-performing technology platforms? Do you enjoy combining technical leadership with hands-on engineering expertise, helping shape the future of enterprise technology while ensuring critical services remain reliable and secure? If so, this could be the opportunity for you.

We’re looking for a

Senior Platform Engineer to join our Infrastructure team within Information Technology. In this senior technical role, you’ll provide leadership and ownership across a range of enterprise platforms, ensuring services remain secure, resilient, supportable and aligned to organisational objectives.

Working closely with Architecture, Cyber Security, Business Applications, End User Computing, suppliers and business stakeholders, you’ll play a key role in delivering technology services that provide long-term business value. From cloud platforms and identity services to Microsoft 365 and SaaS technologies, you’ll be responsible for the engineering, governance, continual improvement and operational readiness of critical technology platforms across the organisation.

Key Responsibilities

Act as the senior technical authority for assigned technology platforms, ensuring services remain secure, resilient and aligned with organisational standards

Provide technical leadership across enterprise infrastructure, cloud, collaboration, identity and hybrid technology services

Own the full lifecycle of technology platforms, from implementation and optimisation through to renewal and retirement

Lead the design, implementation and continual improvement of complex technology solutions, ensuring they are scalable, secure and operationally supportable

Translate architectural designs and strategic technology direction into reliable and supportable operational services

Lead service acceptance and operational readiness activities for new and changed technology services before they move into live operation

Provide technical ownership and governance for Azure, Microsoft 365, identity services, SaaS platforms and associated integrations

Drive the adoption of automation, platform engineering and Infrastructure as Code practices to improve service quality and operational efficiency

Maintain secure technology platforms through effective patching, configuration management, vulnerability remediation and technical assurance activities

Lead resilience, disaster recovery and service continuity activities, ensuring recovery capabilities are tested and improved regularly

Build strong relationships with suppliers, technology vendors and service providers to ensure high standards of service delivery

Deputise for the Infrastructure Manager when required and contribute to engineering standards, operating models and technology roadmaps

More About You

Significant experience in senior infrastructure, cloud, platform engineering or technical leadership roles

ITIL Foundation or equivalent service management qualification

Proven experience owning or leading enterprise infrastructure, cloud, platform or SaaS services throughout their lifecycle

Experience delivering and supporting operationally critical technology services

Extensive experience supporting and optimising hybrid infrastructure, cloud and SaaS environments

Strong knowledge of Microsoft 365, Azure, VMware, enterprise infrastructure and integration technologies

Experience leading complex technical implementations involving multiple stakeholders and suppliers

Strong supplier-management and vendor-escalation experience

Experience leading technical troubleshooting, root-cause analysis and service restoration activities

Proven ability to influence technical direction, engineering standards and best practice

Choosing us is easy

As an employee of A2Dominion, we want you to feel rewarded and have a choice of flexible benefits, salary exchange benefits, and rewards and discounts that work for you, wherever you are in your life.

We offer a wide range of staff benefits. For this role, these include:

* 25days’ holiday (Plus Bank Holidays) increasing up to 28 days with 3 years of service

* Upto 8% contributory pension

* Flexible working

* Allpermanent and fixed-term employees receive a generous annual allowance of up to £300 to use towards health and lifestyle benefits for both you and your family

Inclusion at A2Dominion

We’re proud to be a Disability Confident Employer and welcome applications from people of all backgrounds. Our recruitment process is inclusive and accessible, and we guarantee an interview to disabled applicants who meet the minimum criteria.

Reasonable adjustments are available throughout the process - just contact our Resourcing Team at resourcing@a2dominion.co.uk

We know some people may hesitate to apply unless they meet every requirement. If that’s you, we’d still encourage you to apply - or get in touch with us to talk it through.

At A2Dominion, we value diversity, embrace flexibility, and are a family-friendly employer. Everyone belongs here. Join us and help make a lasting difference in the lives of our customers.

This vacancy is being managed by

Danny Banks. The role closes on 1st October 2026 and we reserve the right to close early upon appointment of the right candidate.

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